1. M em .M anchr. L it.P h il;Black M. M.;Soc.,1935
2. Proc. R oy;Soc. A,1935
3. Proc. Camb. P h il;Soc.,1955
4. J;Opt. Soc. A m er.,1956
5. H artree D. R . 1957 The calculation of atomic structures (1st ed. §§3-6 5-5 5-7). New Y ork: Jo h n W iley and Sons Inc.